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-rw-r--r--fxbarcode/oned/BC_OnedCode128Writer.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/fxbarcode/oned/BC_OnedCode128Writer.cpp b/fxbarcode/oned/BC_OnedCode128Writer.cpp
index 644933d386..95a95b69e2 100644
--- a/fxbarcode/oned/BC_OnedCode128Writer.cpp
+++ b/fxbarcode/oned/BC_OnedCode128Writer.cpp
@@ -195,7 +195,7 @@ int32_t CBC_OnedCode128Writer::Encode128C(const CFX_ByteString& contents,
if (std::isdigit(ch)) {
patternIndex = FXSYS_atoi(contents.Mid(position, 2).c_str());
++position;
- if (std::isdigit(contents[position]))
+ if (position < contents.GetLength() && std::isdigit(contents[position]))
++position;
} else {
patternIndex = static_cast<int32_t>(ch);